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OKF Overview

The Open Knowledge Format (OKF v0.1) is Google's minimal, vendor-neutral spec for sharing the metadata and curated context that surrounds data: a directory of Markdown files, each with YAML frontmatter whose only required field is type, optional index.md and log.md, and Markdown cross-links that turn the directory into a knowledge graph. Producers emit a bundle; consumers (coding agents, viewers, search) read it.

@zeyos/client ships a conformant OKF bundle under okf/ that describes the ZeyOS data model, and tooling to produce, consume, validate, and refine it.

Why OKF fits ZeyOS​

The client already derives a compact schema from the OpenAPI/dbref specs. OKF turns that — plus the curated business knowledge that used to live only in the skill pack — into a portable knowledge layer any agent or tool can read, independent of this client.

The bundle is canonical for ZeyOS structural facts: the hand-maintained agents/shared/zeyos-entity-reference.md operationId table is now generated from the same source, so the skills and the OKF bundle can't drift apart.

Bundle layout​

Text
okf/
  index.md                  # root listing; frontmatter: okf_version, source_snapshot
  log.md                    # schema-change history (auto-appended on real changes)
  entities/                 # one concept per API-backed entity — type: ZeyOS Entity
    index.md
    accounts.md  tickets.md  transactions.md  …
  metrics/                  # business metric definitions — type: Metric
  playbooks/                # step-by-step query workflows — type: Playbook
  concepts/                 # cross-cutting rules / footguns — type: Reference

Each entity concept carries a Schema table (column, type, nullability, default, index, foreign key), Foreign Keys (cross-linked to the target entity), Enums (parsed from the schema), Indexes (including the GIN/partial indexes behind the filters footgun), and Operations (the real @zeyos/client operationIds, read straight from api.json).

Generated vs curated: managed blocks​

Each entity concept mixes auto-generated structure with curated prose. The generated region is fenced by HTML-comment markers:

Markdown
<!-- okf:generated:start — rewritten by scripts/generate-okf.mjs; do not edit by hand -->
# Schema
…
<!-- okf:generated:end -->

# Notes
Curated guidance — preserved across every regeneration.

The producer rewrites only the region between the markers. Curated # Notes/# Metrics prose (added by a human or the refinement loop) is preserved verbatim, so regenerating after a schema change never clobbers curation. See Keeping OKF fresh.

Relationship to the skill pack​

Two projections of one knowledge core:

  • Skills (agents/) stay the task/runner-facing layer: the operating contract, "act, don't plan", and safety.
  • OKF (okf/) is the reference layer: the entity schema-of-record plus the metric, playbook, and concept catalog.

Skills point into okf/; when a schema fact in a shared reference and in okf/ ever disagree, okf/ wins.